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激光拼焊焊缝截面轮廓几何建模方法

Geometric Modeling Methods for Cross-Sectional Profile of Welds in Tailored Blank Laser Welding

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摘要

提出了一种激光拼焊焊缝截面轮廓的几何建模方法, 基于Laws纹理滤波和数学形态学闭运算提取了截面的轮廓边缘, 分别采用多项式函数模型、指数函数模型、高斯函数模型对提取的截面轮廓边缘进行了曲线拟合, 并对拟合结果进行了误差分析。分析结果表明, 基于指数函数模型拟合的焊缝截面轮廓上边缘的精度最高, 基于高斯函数模型拟合的焊缝截面轮廓下边缘的精度最高。对不同工艺参数条件下获得的激光拼焊焊缝截面轮廓边缘进行了几何建模实验, 实验结果表明, 提出的方法可以有效地实现激光拼焊焊缝截面轮廓的几何建模。

Abstract

A geometric modeling method for the cross-sectional profile of welds in the tailored blank laser welding is proposed. The edges of the cross-sectional profile are extracted based on the Laws texture filtering and the mathematical morphological closed operation. The curve fitting for these edges of the cross-sectional profile are done with the polynomial function model, the exponential function model and the Gaussian function model, respectively. The error analysis of the fitting results is also conducted. The analysis results show that the fitting precision for the upper edge of the cross-sectional profile of welds based on the exponential function model is the highest, however the fitting precision for the lower edge of the cross-sectional profile of welds based on the Gaussian function model is the highest. The geometric modeling experiments for the edges of the cross-sectional profile of welds in the tailored blank laser welding under different welding parameters are carried out and the experimental results demonstrate that the proposed method is effective to realize the geometric modeling for the cross-sectional profile of welds in the tailored blank laser welding.

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中图分类号:TG456.7

DOI:10.3788/lop54.091402

所属栏目:激光器与激光光学

基金项目:国家自然科学基金(51405481)、辽宁省教育厅科研项目(LJZ2016016)、江苏省产学研合作项目(BY2015063-01)、沈阳建筑大学学科涵育计划(XKHY2-32)

收稿日期:2017-03-16

修改稿日期:2017-04-18

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邹媛媛:沈阳建筑大学机械工程学院, 辽宁 沈阳 110168高档石材数控加工装备与技术国家地方联合工程实验室, 辽宁 沈阳 110168
左克铸:沈阳建筑大学机械工程学院, 辽宁 沈阳 110168高档石材数控加工装备与技术国家地方联合工程实验室, 辽宁 沈阳 110168
李鹏飞:沈阳建筑大学机械工程学院, 辽宁 沈阳 110168高档石材数控加工装备与技术国家地方联合工程实验室, 辽宁 沈阳 110168
蔡尚:沈阳建筑大学机械工程学院, 辽宁 沈阳 110168高档石材数控加工装备与技术国家地方联合工程实验室, 辽宁 沈阳 110168

联系人作者:邹媛媛(yyzou@sjzu.edu.cn)

备注:邹媛媛(1981-), 女, 博士, 副教授, 主要从事光电检测技术方面的研究。

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引用该论文

Zou Yuanyuan,Zuo Kezhu,Li Pengfei,Cai Shang. Geometric Modeling Methods for Cross-Sectional Profile of Welds in Tailored Blank Laser Welding[J]. Laser & Optoelectronics Progress, 2017, 54(9): 091402

邹媛媛,左克铸,李鹏飞,蔡尚. 激光拼焊焊缝截面轮廓几何建模方法[J]. 激光与光电子学进展, 2017, 54(9): 091402

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